KR102204407B1 - System and method for simultaneously lifting structures using statistical analysis - Google Patents

Abstract

According to one embodiment of the present invention, provided is a system and a method for simultaneously lifting a structure using statistical analysis, which can statistically analyze a moving distance of a structure to minimize a difference between lifting points and comprises: a plurality of hydraulic actuators operated to lift the structure by receiving hydraulic pressure; a hydraulic pressure supply device supplying the hydraulic pressure to the hydraulic actuators; a plurality of distance measurement sensors disposed in each hydraulic actuator to measure the moving distance of the structure; and a controller, based on the moving distance received from the distance measurement sensors, selecting a lifting required point by using Pearson correlation coefficient and controlling the hydraulic pressure supply device to operate the hydraulic actuator positioned at the lifting required point.

Description

System and method for simultaneously lifting structures using statistical analysis}

The present invention relates to a system and method for simultaneously raising a structure using statistical analysis.

At a construction site or a manufacturing plant, it is necessary to lift a large structure of heavy weight such as the upper plate of a bridge for manufacturing, construction, or repair. Although a hydraulic device with a capacity proportional to the weight of the structure is required to raise a large structure of heavy weight, the use of a high-capacity hydraulic device in a small number is difficult to adopt due to the limitation of installation and high cost due to the size of the hydraulic device. Therefore, in order to raise a heavy structure, a plurality of hydraulic devices having an appropriate capacity are used to achieve ease of installation and economical efficiency. However, if control fails as the number of hydraulic devices increases, there is a risk of accident due to inclination or departure of the structure. Therefore, in order to solve this problem, there is a need for a system and method for integrally controlling a plurality of hydraulic devices.

KR 10-1953842 B1

An object according to an embodiment of the present invention is to measure the degree to which the structure has been raised using a distance sensor and statistically analyze the degree to which the structure has been lifted to select the optimal impression point for achieving simultaneous impression. It is to provide a system and method.

In addition, an object according to an embodiment of the present invention is to measure the hydraulic pressure supplied to the hydraulic actuator and statistically analyze the hydraulic pressure to simultaneously stop the structure simultaneous raising system or to notify that an abnormality has occurred in the hydraulic pressure when an abnormal value occurs. It is to provide an impression system and method.

A system for simultaneously raising a structure using statistical analysis according to an embodiment of the present invention includes a plurality of hydraulic actuators operating to raise a structure by receiving hydraulic pressure, a hydraulic supply device supplying hydraulic pressure to the plurality of hydraulic actuators, and the hydraulic pressure. A plurality of distance measuring sensors arranged for each actuator to measure the moving distance the structure has moved, and based on the moving distance received from the plurality of distance measuring sensors, select a point where an impression is required using a Pearson correlation coefficient, It may include a controller for controlling the hydraulic supply device so as to operate the hydraulic actuator located at the point where the pulling is required.

In addition, the controller calculates a plurality of Pearson correlation coefficients by comparing the moving distances of the structure at a point where the plurality of hydraulic actuators received from the plurality of distance measuring sensors are located, and calculates a plurality of Pearson correlation coefficients, the smallest among the plurality of Pearson correlation coefficients. Among the two points constituting the value, a point having a small movement distance may be selected as a point requiring an impression, and the hydraulic supply device may be controlled to raise a point requiring an impression.

In addition, the system for simultaneously raising a structure using statistical analysis according to an embodiment of the present invention may further include a plurality of hydraulic pressure measurement sensors for measuring hydraulic pressure values supplied to the plurality of hydraulic actuators, and the controller On the basis of the hydraulic pressure value received from the hydraulic pressure measurement sensor of, if there is a hydraulic pressure value outside the limit range based on the quartile, the safety measures can be further performed.

In addition, the limit range is composed of a lower limit calculated by subtracting a value obtained by multiplying the sensitivity by the interquartile range from the first quartile, and an upper limit calculated by adding the value multiplied by the sensitivity by the interquartile range to the third quartile. In addition, the controller may determine that the hydraulic pressure value is less than the lower limit value or that the hydraulic pressure value is greater than the upper limit value as outside the limit range.

In addition, the hydraulic supply device is connected to each of the plurality of hydraulic actuators, and a control valve for controlling hydraulic pressure supplied to the hydraulic actuator, a hydraulic pump providing hydraulic pressure to the plurality of hydraulic actuators through the control valve, and hydraulic pressure are transmitted. It may include an oil tank to store the oil.

In the method for simultaneously raising a structure using statistical analysis according to an embodiment of the present invention, when a plurality of hydraulic actuators raise a structure by receiving hydraulic pressure from a hydraulic supply device, a plurality of distance measuring sensors disposed for each of the plurality of hydraulic actuators A moving distance measuring step of measuring the moving distance of the structure in real time, and based on the moving distances received from the plurality of distance measuring sensors by the controller, the point where the impression is required is selected using the Pearson correlation coefficient, and the impression is It may include a statistics-based raising step of controlling the hydraulic supply device to operate the hydraulic actuator located at a necessary point.

In addition, the statistics-based raising step is a correlation coefficient calculation step of calculating a plurality of Pearson correlation coefficients by comparing the moving distances measured by the plurality of distance measuring sensors with each other, the smallest Pearson correlation coefficient among the plurality of Pearson correlation coefficients. Selecting a minimum value selection step, an impression point selection step of selecting one of the two points from which the smallest Pearson correlation coefficient is derived as a point requiring an impression using a discrimination rule, and the step of raising the point requiring the impression It may include a step of raising the selection point for controlling the hydraulic supply device.

In addition, the discrimination rule compares the moving distances of two points having the smallest Pearson correlation coefficient, and selects a small point as a point that needs to be raised preferentially. If the moving distances of the two points are the same, in a predetermined order It may be to select a priority point as a point that requires an impression.

In addition, a method for simultaneously raising a structure using statistical analysis according to an embodiment of the present invention includes a hydraulic pressure measurement step in which a plurality of hydraulic pressure measurement sensors connected to each of the plurality of hydraulic actuators measure a hydraulic pressure value supplied to the hydraulic actuator in real time, And the controller may further include a safety monitoring step of performing safety measures when there is a hydraulic pressure value out of the limit range based on the quartile based on the hydraulic pressure values received from the plurality of hydraulic pressure measurement sensors.

In addition, in the safety monitoring step, a lower limit value obtained by subtracting a value obtained by subtracting the value obtained by multiplying the sensitivity by the interquartile range from the first quartile range using the hydraulic pressure values received from the plurality of hydraulic pressure measurement sensors and the sensitivity in the interquartile range A limit range calculation step of calculating a limit range consisting of an upper limit value obtained by adding the multiplied value to a third quartile, a limit range comparison comparing whether the hydraulic values received from the plurality of hydraulic pressure measurement sensors are less than the lower limit value or greater than the upper limit value And a step of performing the safety measures when the hydraulic pressure value is outside the limit range.

Features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to this, terms or words used in the present specification and claims should not be interpreted in a conventional and dictionary meaning, and the inventor may appropriately define the concept of the term in order to describe his or her invention in the best way It should be interpreted as a meaning and a concept consistent with the technical idea of the present invention based on the principle that there is.

According to an embodiment of the present invention, since it is possible to select the optimum impression point for achieving simultaneous impression by measuring the degree to which the structure is raised using a distance measuring sensor and statistically analyzing the degree of impression, the impression point of the structure By minimizing star errors, precise simultaneous impressions can be achieved.

In addition, according to an embodiment of the present invention, when an abnormal value occurs by measuring the hydraulic pressure supplied to the hydraulic actuator and statistically analyzing the hydraulic pressure, the simultaneous increase in the structure can be stopped or an abnormality in the hydraulic pressure can be reported. You can prevent possible accidents in advance.

1 is a diagram illustrating an imbalance occurring when a structure is raised.
2 is a diagram showing a system for simultaneous elevation of a structure using statistical analysis according to an embodiment of the present invention.
3 is a flow chart showing a method of simultaneously raising a structure using statistical analysis according to an embodiment of the present invention.
4 is a flow chart showing a precision raising step using correlation coefficient analysis according to an embodiment of the present invention.
5 is a graph showing the height of an impression point over time in a conventional structure raising method.
6 is a graph showing the height of an impression point over time in a system for simultaneously raising a structure using statistical analysis according to an embodiment of the present invention.
7 is a flow chart showing a safety monitoring step using quartile analysis according to an embodiment of the present invention.
8 is a view for explaining a limit range using an interquartile range according to an embodiment of the present invention.

Objects, specific advantages and novel features of an embodiment of the present invention will become more apparent from the following detailed description and preferred embodiments associated with the accompanying drawings. In adding reference numerals to elements of each drawing in the present specification, it should be noted that, even though they are indicated on different drawings, only the same elements are to have the same number as possible. In addition, terms such as “one side”, “the other side”, “first”, and “second” are used to distinguish one component from other components, and the component is limited by the terms no. “First” may be indicated by adding “a” after the reference numeral of the component, and “second” adding “b” after the reference numeral of the component. Hereinafter, in describing one embodiment of the present invention, a detailed description of related known technologies that may unnecessarily obscure the subject matter of the present embodiment will be omitted.

Hereinafter, with reference to the accompanying drawings, an embodiment of the present invention will be described in detail.

1 is a diagram illustrating an imbalance occurring when the structure 2 is raised.

The structure 2 is a heavy weight and large volume object. For example, the structure 2 may include an upper plate of a bridge, a reinforced concrete structure, a steel structure, and the like. A bridge is made of a structure in which the lower structure supports the upper plate, and it is necessary to lift the upper plate to exchange the structure that connects the upper plate and the lower structure and functions as a buffer. At this time, a system for simultaneously raising a structure using statistical analysis according to an embodiment of the present invention may be used. The structure 2 described in the present specification may be the upper plate of the bridge, and the ground 1 may be the lower structure 2 of the bridge supporting the hydraulic actuator 10.

The structure 2 may vary in shape and may not be uniform. That is, there may be a difference in the load of each part of the structure 2. When the structure 2 is raised, a difference may occur in the degree to which the structure 2 is raised due to a difference in load of each portion of the structure 2. For example, if the load at a specific point is W1 and the load at another point is W2, the moving distance D2 at another point may be smaller than the moving distance D1 at the specific point because W1 <W2. If such an imbalance is accumulated, accidents such as the structure 2 tilted and damaged or the structure 2 deviated from the normal position may occur. Structure simultaneous impression system and invention using statistical analysis according to an embodiment of the present invention can automatically and uniformly adjust the height at which each point of the structure 2 moves, so that the structure 2 is not inclined. I can.

2 is a diagram showing a system for simultaneous elevation of a structure using statistical analysis according to an embodiment of the present invention.

As shown in Figure 2, the structure simultaneous lifting system using statistical analysis according to an embodiment of the present invention, a plurality of hydraulic actuators 10, a plurality of operating to raise the structure (2) by receiving hydraulic pressure. A hydraulic supply device 40 for supplying hydraulic pressure to the hydraulic actuator 10, a plurality of distance measuring sensors 20 arranged for each hydraulic actuator 10 to measure the moving distance of the structure 2, and a plurality of distances Based on the moving distance received from the measurement sensor 20, the hydraulic supply device 40 is used to select the point where the impression is required using the Pearson correlation coefficient, and operate the hydraulic actuator 10 located at the point where the impression is required. It may include a controller 50 to control, and may further include a plurality of hydraulic pressure measurement sensors 30 for measuring hydraulic pressure values supplied to the plurality of hydraulic actuators 10.

The hydraulic actuator 10 is a device that raises an object by receiving hydraulic pressure. The hydraulic actuator 10 is a concept including a hydraulic jack, a hydraulic cylinder, and the like. The hydraulic actuator 10 is installed between the ground 1 and the structure 2, and the hydraulic actuator 10 operates to exert a force on the structure 2 in a direction away from the ground 1 to control the structure 2 Move. For example, the hydraulic actuator 10 disposed between the lower structure of the bridge and the upper plate may move the upper plate of the bridge in a direction away from the lower structure. In other words, the upper plate of the bridge can be lifted. A plurality of hydraulic actuators 10 may be installed according to the weight and volume of the structure 2. The hydraulic actuator 10 can be selected in various sizes according to the weight to be raised. In FIGS. 1 and 2, the first hydraulic actuator 10a, the second hydraulic actuator 10b, and the third hydraulic actuator 10c are exemplified at the first point, the second point, the third point, and the fourth point, respectively. A case where the fourth hydraulic actuator 10d is installed is shown.

The distance measuring sensor 20 is disposed for each hydraulic actuator 10 to measure the moving distance the structure 2 has moved. The distance measuring sensor 20 may be installed adjacent to the hydraulic actuator 10, and the distance D the structure 2 has moved represents the degree to which the structure 2 is raised from the original position of the structure 2 . The distance measurement sensor 20 may include various distance measurement sensors 20 such as an infrared (IR) type sensor, a laser type sensor, a flight distance measurement method (ToF) sensor, and an analog or digital sensor. The distance measurement sensor 20 may provide the measured moving distance to the controller 50. In FIG. 2, a line from which the distance measurement sensor 20 provides a measurement value to the controller 50 is indicated by a dotted line.

The hydraulic supply device 40 is a device that supplies hydraulic pressure to the hydraulic actuator 10. The hydraulic supply device 40 may supply hydraulic pressure to a plurality of hydraulic actuators 10 at the same time, and may individually supply hydraulic pressure to only one of the hydraulic actuators 10 under the control of the controller 50. A plurality of hydraulic supply devices 40 may be used. For example, when there are 20 hydraulic actuators 10, two hydraulic supply devices 40 for supplying hydraulic pressure to 10 hydraulic actuators 10 may be used. In FIG. 2, a line through which the hydraulic supply device 40 transmits hydraulic pressure to the hydraulic actuator 10 is indicated by a solid line.

The hydraulic supply device 40 is connected to each of the plurality of hydraulic actuators 10 to control the hydraulic pressure supplied to the hydraulic actuator 10 to the plurality of hydraulic actuators 10 through a control valve 41 and a control valve 41. It may include a hydraulic pump 42 for providing hydraulic pressure, and a hydraulic tank 43 for storing oil for transferring hydraulic pressure.

The control valve 41 may control hydraulic pressure supplied from the hydraulic pump 42 to the hydraulic actuator 10 according to a valve control signal received from the controller 50. The control valve 41 may use a solenoid valve or the like, and other various types of valves may be used. The control valve 41 is installed for each hydraulic actuator 10, and a plurality of control valves 41 connected to one hydraulic pump 42 may be individually controlled. 2, a first control valve 41a for supplying hydraulic pressure from the hydraulic pump 42 to the first hydraulic actuator 10a, and a first control valve 41a for supplying hydraulic pressure from the hydraulic pump 42 to the second hydraulic actuator 10b. The second control valve 41b, the third control valve 41c supplying hydraulic pressure from the hydraulic pump 42 to the third hydraulic actuator 10c, and the hydraulic pump 42 supplying hydraulic pressure to the fourth hydraulic actuator 10d. The supplying fourth control valve 41d is shown. In FIG. 2, a line through which the controller 50 outputs a valve control signal is indicated by a dashed-dotted line.

The hydraulic pump 42 supplies hydraulic pressure to the hydraulic actuator 10 using oil stored in the hydraulic tank 43. The hydraulic pump 42 may supply hydraulic pressure to the hydraulic actuator 10 according to the pump control signal ⑤ received from the controller 50. A line through which the controller 50 outputs the pump control signal ⑤ is indicated by a dashed-dotted line.

The hydraulic tank 43 may store oil for supplying hydraulic pressure.

A hydraulic header may be further installed between the hydraulic pump 42 and the control valve 41. In FIG. 2, the hydraulic header is not separately shown, but a hydraulic header may be installed at a point where hydraulic pressure diverges from one hydraulic pump 42 to a plurality of hydraulic actuators 10. The hydraulic header may receive hydraulic pressure from the hydraulic pump 42 and pass through the control valve 41 to transmit pressure to the plurality of hydraulic actuators 10. When the hydraulic header is applied, since the hydraulic pressure supplied by the hydraulic pump 42 can be supplied to the plurality of hydraulic actuators 10, there is an advantage that the hydraulic pump 42 does not need to be installed for each hydraulic actuator 10.

The hydraulic pressure measurement sensor 30 measures a hydraulic pressure value supplied to the hydraulic actuator 10. The hydraulic pressure measurement sensor 30 is located between the hydraulic actuator 10 and the control valve 41, between the control valve 41 and the hydraulic header, or between the hydraulic header and the hydraulic pump 42. The hydraulic pressure value of can be measured. In FIG. 2, the hydraulic pressure measurement sensor 30 is shown to be positioned between the hydraulic actuator 10 and the control valve 41. The first hydraulic pressure measurement sensor 30a is connected to measure the hydraulic pressure supplied to the first hydraulic actuator 10a, and the second hydraulic pressure measurement sensor 30b is connected to measure the hydraulic pressure supplied to the second hydraulic actuator 10b. And, the third hydraulic pressure measurement sensor (30c) is connected to measure the hydraulic pressure supplied to the third hydraulic actuator (10c), and the fourth hydraulic pressure measurement sensor (30d) measures the hydraulic pressure supplied to the fourth hydraulic actuator (10d) Can be connected to The hydraulic pressure measurement sensor 30 may be installed at any position on a line that transmits hydraulic pressure. The hydraulic pressure measurement sensor 30 may measure a hydraulic pressure value at a location and provide it to the controller 50. In FIG. 2, a line through which the hydraulic pressure measurement sensor 30 provides the hydraulic pressure value to the controller 50 is indicated by a dotted line.

The controller 50 receives the measured values from the distance measurement sensor 20 and the hydraulic pressure measurement sensor 30 and controls the control valve 41 and the hydraulic pump 42 to control the simultaneous structure elevation system as a whole. The controller 50 may be implemented as an information processing device such as a PC, a notebook computer, or a smart phone. The controller 50 may include an input unit, a display unit, a processor, a signal output unit, and a storage unit.

The input unit may receive a user's input and receive data transmitted by the distance measurement sensor 20 and the hydraulic pressure measurement sensor 30. The user sets the sensitivity (x) through the input unit, sets safety measures, sets the cycle of the hydraulic pressure measurement step (S60) or the moving distance measurement step (S40), or the simultaneous increase step (S56) or the statistics-based increase step (S50) You can set the height to raise at once, or enter other settings or commands.

The display unit includes the state of each component included in the hydraulic supply device 40, the moving distance measured by the distance measurement sensor 20, the hydraulic pressure value measured by the hydraulic pressure measurement sensor 30, and the position of the hydraulic actuator 10 currently operating. , When an outlier occurs, various information such as a notification may be provided to the user.

The processor may operate a program code written to perform a method for simultaneously raising a structure using statistical analysis according to an embodiment of the present invention.

The signal output unit may generate a control signal for controlling components of the hydraulic supply device 40 according to a command of the processor. The signal output unit can generate and output a valve control signal (①②③④) and a pump control signal (⑤).

The storage unit stores a program code written to perform a method of simultaneously raising a structure using statistical analysis according to an embodiment of the present invention, a moving distance measured by the distance measuring sensor 20, a hydraulic pressure value measured by the hydraulic measuring sensor 30, etc. Can be saved.

The controller 50 may receive a pressure value from the hydraulic pressure measurement sensor 30 connected to the hydraulic supply line and control the control valve 41 and the hydraulic pump 42 to supply hydraulic pressure. The controller 50 can control to operate the hydraulic pump 42 when the pressure of the hydraulic supply line is lower than the required pressure, and stop the operation of the hydraulic pump 42 when the pressure of the hydraulic supply line is higher than the set pressure. have. The hydraulic supply line refers to a path through which hydraulic pressure is transmitted from the hydraulic tank 43 to the hydraulic actuator 10 through the hydraulic header and the control valve 41 through the hydraulic pump 42. The controller 50 opens only the arbitrary control valve 41 and blocks the other control valves 41 in the selection point raising step (S55) to be described later, so that only the hydraulic actuator 10 connected to the arbitrary control valve 41 is applied. It is possible to control the hydraulic supply device 40 to supply. The controller 50 may control the hydraulic supply device 40 to simultaneously supply hydraulic pressure to the plurality of hydraulic actuators 10 so that the moving distances of the plurality of points increase equally in the simultaneous increase step S56 to be described later.

The controller 50 calculates a plurality of Pearson correlation coefficients by comparing the moving distances of the structure 2 at a point where the plurality of hydraulic actuators 10 received from the plurality of distance measuring sensors 20 are located, and calculates a plurality of Pearson correlation coefficients. Among the two points constituting the smallest value among the correlation coefficients, a point having a small movement distance may be selected as a point requiring an increase, and the hydraulic supply device 40 may be controlled to raise a point requiring an impression. A specific process of selecting a point at which the controller 50 will operate the hydraulic actuator 10 using the Pearson correlation coefficient will be described later.

The controller 50 may further perform safety measures when there is a hydraulic pressure value out of the limit range based on the quartile based on the hydraulic pressure values received from the plurality of hydraulic pressure measurement sensors 30. The limit range may be composed of a lower limit calculated by subtracting a value obtained by multiplying the sensitivity by the interquartile range from the first quartile, and an upper limit calculated by adding a value multiplied by the sensitivity by the interquartile range to the third quartile. Specifically, when the hydraulic pressure value is less than the lower limit value or the hydraulic pressure value is greater than the upper limit value, the controller 50 may determine that it is out of the limit range. A specific process of monitoring the safety of the simultaneous structure elevation system using statistical analysis according to an embodiment of the present invention by determining an abnormality in the hydraulic pressure value supplied to the hydraulic actuator 10 by the controller 50 using the quartile will be described later. do.

3 is a flow chart showing a method of simultaneously raising a structure using statistical analysis according to an embodiment of the present invention.

As shown in FIG. 3, in the method of simultaneously raising a structure using statistical analysis according to an embodiment of the present invention, a target height setting step of setting a target height by receiving a target height from a user by the controller 50 ( S10), the origin setting step (S20) of setting the position of the current structure 2 as the origin by operating the distance measuring sensor 20 disposed in the hydraulic actuator 10, the controller 50 prompts the user to start the impression It includes a starting step (S30) of raising the structure 2 by operating the hydraulic actuator 10 by receiving the command. It may be configured to perform the step of setting the origin (S20) after the step of starting the impression (S30).

When the lifting of the structure 2 starts in the lifting start step (S30), the controller 50 generates a control signal (valve control signal (①②③④), pump control signal (⑤)) that controls the hydraulic supply device 40. Output, and the hydraulic pressure supply device 40 supplies hydraulic pressure to the hydraulic actuator 10 according to the control signal. The hydraulic actuator 10 can raise the structure 2 according to the supplied hydraulic pressure.

In the method of simultaneously raising the structure using statistical analysis according to an embodiment of the present invention, when the plurality of hydraulic actuators 10 raise the structure 2 by receiving hydraulic pressure from the hydraulic supply device, the plurality of hydraulic actuators 10 A moving distance measurement step (S40) in which a plurality of distance measuring sensors 20 arranged for each measure the moving distance of the structure 2 in real time, and a movement received by the controller 50 from the plurality of distance measuring sensors 20 Based on the distance, using the Pearson correlation coefficient to select a point where an impression is required, and control the hydraulic supply device 40 to operate the hydraulic actuator 10 located at the point where the impression is required (S50) It may further include.

In addition, in the method for simultaneously raising a structure using statistical analysis according to an embodiment of the present invention, a plurality of hydraulic pressure measurement sensors 30 connected to each of the plurality of hydraulic actuators 10 measure the hydraulic pressure values supplied to the hydraulic actuator 10 in real time. The hydraulic pressure measurement step (S60) to be measured, and the controller 50 based on the hydraulic pressure values received from the plurality of hydraulic pressure measurement sensors 30, if there is a hydraulic pressure value outside the limit range based on the quartile, take safety measures. It may further include a safety monitoring step (S70) to perform.

The moving distance measuring step (S40) and the hydraulic pressure measuring step (S60) are repeatedly performed until the structure 2 reaches the target height and may be independently performed. In the moving distance measurement step S40, the moving distance of the structure 2 is measured based on the origin and transmitted to the controller 50. In the moving distance measurement step S40, the controller 50 may request a measurement value from the distance measurement sensor 20 and perform an operation of receiving the measurement value. The moving distance measurement step (S40) may be repeatedly performed at regular intervals. As the movement distance measurement step S40 and the hydraulic pressure measurement step S60 are repeatedly performed, the controller 50 receives a plurality of movement distances and hydraulic pressure values over time, which may be stored in a storage unit.

When the moving distance measuring step S40 is performed, a target reaching determination step S80 of determining whether the target height has been reached by comparing the current moving distance with the target height is performed. If the current moving distance is less than the target height and thus the target height is not reached (N), since an additional increase is required, the statistical-based raising step (S50) is performed. If the current moving distance is equal to or greater than the target height (Y), the raising of the structure 2 is terminated.

If the current movement distance is lower than the target height and requires an increase, the statistical-based raising step (S50) is performed to operate the hydraulic actuator 10 at all points, or the hydraulic actuator 10 at any point. When the statistics-based raising step (S50) is performed, the moving distance measuring step (S40) of measuring the moving distance is performed again.

When the hydraulic pressure measurement step (S60) is performed, the safety monitoring step (S70) is performed to check whether an abnormality exists in the hydraulic supply line. Even if the moving distance of the structure 2 reaches the target height and ends, the hydraulic actuator 10 needs to be maintained in the raised state of the structure 2, so the hydraulic pressure needs to be continuously supplied, and the hydraulic pressure measurement step (S60) And the safety monitoring step (S70) may be continuously performed to monitor the safety of the hydraulic supply line. The hydraulic pressure measurement step (S60) and the safety monitoring step (S70) may be set to end based on the user's input, or to end when the target height is reached.

4 is a flow chart showing a statistical-based raising step (S50) using a correlation coefficient analysis according to an embodiment of the present invention.

As shown in Figure 4, the statistical-based raising step (S50) according to an embodiment of the present invention, by comparing the moving distances measured by a plurality of distance measuring sensors 20 with each other to calculate a plurality of Pearson correlation coefficients The correlation coefficient calculation step (S51), the minimum value selection step of selecting the smallest Pearson correlation coefficient among a plurality of Pearson correlation coefficients (S53), one of the two points from which the smallest Pearson correlation coefficient was derived, using the discrimination rule Thus, it may include an impression point selection step (S54) of selecting a point where the impression is required, and a selection point raising step (S55) of controlling the hydraulic supply device 40 to raise the point where the impression is required.

The controller 50 performs a statistical-based raising step (S50) based on the moving distance received from the plurality of distance measuring sensors 20. First, the controller 50 calculates a Pearson correlation coefficient between points at which each movement distance is measured using a plurality of movement distances.

The Pearson Correlation Coefficient (PCC) is a quantification of the linear correlation between the two variables X and Y. The Pearson correlation coefficient indicates how strong the linearity between the variables being compared is. The Pearson correlation coefficient value is in the range of -1 <P <1, the closer to 1 indicates a strong positive linear relationship, the closer to -1 indicates a strong negative linear relationship, and the closer to 0 indicates no linear relationship. Show. The Pearson correlation coefficient is calculated using Equation 1 below.

: 공분산,

: 변수(X,Y)의 표준편차,

: 변수(X,Y)의 i번째 값,

: 변수(X,Y)의 평균,

: 이동거리 측정단계(S40) 수행회수)(

: Covariance,

: Standard deviation of variables (X,Y),

: I-th value of variable (X,Y),

: Average of variables (X,Y),

: Movement distance measurement step (S40) number of times)

As shown in Figs. 1 and 2, the case of using the four hydraulic actuators 10 will be described by way of example. Each of the first to fourth hydraulic actuators 10a, 10b, 10c, and 10d may be disposed at the first to fourth points, and the first to fourth distance measuring sensors 20a, 20b, 20c, and 20d are respectively It may be disposed adjacent to the first to fourth hydraulic actuators 10a, 10b, 10c, 10d. The first to fourth distance measuring sensors 20a, 20b, 20c, and 20d can provide the controller 50 with a moving distance obtained by measuring the moving degree of the structure 2 at each point in the moving distance measuring step S40. have. The moving distances of the first to fourth points can be expressed as shown in Table 1 below. The unit of travel distance is omitted.

Cycle Travel distance by point Point 1 2nd point Third point Point 4 One 0.5 0.5 0.5 0.5 2 One One One One 3 1.5 1.5 1.5 1.5 4 1.5 1.5 1.5 1.5 5 1.6 1.6 1.6 1.5 6 1.8 2 2 2 7 2.3 2.2 2.1 2.2 8 2.4 2.3 2.3 2.3 9 10 11

In Table 1, the cycle indicates the number of times the moving distance measurement step S40 was performed. Period 1 indicates that the moving distance measuring step (S40) was performed first, and period 2 indicates that the moving distance performing step was performed second. In Table 1, the moving distance measuring step (S40) is performed 8 times and the moving distance measured up to the period 8 is described, and the moving distance of the period 9 to 11 is not described, the current eighth moving distance measuring step (S40) This is because it shows the state in which is performed. The controller 50 may perform the movement distance measurement step S40 at a predetermined period and store the movement distance of each received point in the storage unit in order as shown in Table 1. The controller 50 calculates a plurality of Pearson correlation coefficients by performing a correlation coefficient calculation step (S51) every predetermined period. For example, calculating the Pearson correlation coefficient of the first point and the second point at a time point of period 4 is that in Equation 1, the variable X is the moving distance of the first point and the variable Y is the moving distance of the second point, The average of the variable (X,Y) and the standard deviation of the variable (X,Y) are the average and standard deviation of the moving distance from period 1 to 4 of the first point, and the moving distance from period 1 to 4 of the second point. Is the mean and standard deviation of, and the covariance is the covariance of the moving distance of the first point and the second point, the number of times the moving distance measurement step (S40) is performed is 4, and the i-th value of the variables (X, Y) is It becomes the moving distance according to the period between the point and the second point. When the Pearson correlation coefficient of the first point and the second point is calculated at the time point of period 4, the travel distance measured from period 1 to period 4 has an effect when calculating the Pearson correlation coefficient of period 4. That is, the Pearson correlation coefficient calculated between two points at a specific point in time may reflect a change in the measured moving distance until reaching a specific point in time.

A plurality of Pearson correlation coefficients are calculated to compare the moving distances of a plurality of points with each other. For example, when the moving distance is measured at the first to fourth points, the 1-2 Pearson correlation coefficient and the variable (X, Y) are the variables (X, Y) as the moving distances between the first and second points. 1-3 Pearson correlation coefficient using) as the moving distance between the first point and the third point, 1-4 Pearson correlation coefficient using variables (X,Y) as the moving distance between the first point and the fourth point, variable 2-3 Pearson correlation coefficient with (X,Y) as the moving distance between the 2nd and 3rd points, and 2-4 Pearson with the variables (X,Y) as the moving distance between the 2nd and 4th points It is possible to calculate a correlation coefficient 3-4 Pearson correlation coefficient using the variables (X, Y) as the moving distance between the third point and the fourth point. That is, when the moving distance is measured at N points, _N C ₂ (N Combination 2) Pearson correlation coefficients can be calculated. The Pearson correlation coefficient of the first point and the first point is always 1 because the moving distance is the same. Therefore, we calculate the Pearson correlation coefficient at different points.

In Table 1, the moving distances of each point are all the same from period 1 to period 4. Therefore, in periods 1 to 4, the Pearson correlation coefficients are all equally calculated as 1. When the structure 2 starts to be raised, the same impression may occur until a certain point in time, but at a specific point in time, a difference in the moving distance may occur. For example, in period 5, the moving distance of the fourth point is 1.5, and a difference starts to occur from 1.6, which is the moving distance of the other first to third points. When the Pearson correlation coefficient is calculated from the period in which the difference in travel distance occurs, values other than 1 begin to occur.

After the correlation coefficient calculation step (S51), the controller 50 compares the plurality of Pearson correlation coefficients calculated in the correlation coefficient calculation step (S51) with a reference value to determine whether to increase only a specific point (S52). ). In the reference value comparison step S52, each of the plurality of Pearson correlation coefficients is compared with a predetermined reference value. The controller 50 performs a minimum value selection step (S53) when there is a Pearson correlation coefficient equal to or lower than a predetermined reference value among the plurality of Pearson correlation coefficients, and when all of the plurality of Pearson correlation coefficients are greater than the predetermined reference value, all It is possible to perform a simultaneous increase step (S56) of simultaneously raising the hydraulic actuator 10 by a predetermined amount and perform a movement distance measurement step (S40).

Table 2 below shows the results of calculating the Pearson correlation coefficient using the moving distances of the first to fourth points in Period 8 of Table 1. The calculation of the Pearson correlation coefficient in which the third point and the first point are variables X and Y based on the number of each point in the row and column of Table 2 may be referred to as a 3-1 Pearson correlation coefficient.

Point 1 2nd point Third point Point 4 Point 1 One 2nd point 0.9892 One Third point 0.9844 0.9985 One Point 4 0.9876 0.9983 0.9963 One

When the reference value is 0.9900, the controller 50 compares the plurality of Pearson correlation coefficients in Table 2 with the reference value, and a 2-1 Pearson correlation coefficient smaller than the reference value (0.9892 in Table 2), 3-1 Pearson correlation coefficient ( Since 0.9844 in Table 2) and the 4-1 Pearson correlation coefficient (0.9876 in Table 2) exist, the next step, the minimum value selection step S53, may be performed. The controller 50 selects the smallest Pearson correlation coefficient among the plurality of Pearson correlation coefficients in the minimum value selection step S53. For example, in Table 2, the value of the 3-1 Pearson correlation coefficient calculated using the moving distance between the third point and the first point is 0.9844, which is the smallest. Therefore, the controller 50 selects the 3-1 Pearson correlation coefficient in the minimum value selection step (S53).

The smallest Pearson correlation coefficient means that the difference between the first point and the third point is the largest when comparing the moving distances of the first to fourth points measured at each period during the impression of the structure (2). do.

Next, the controller 50 selects one of the two points from which the smallest Pearson correlation coefficient is derived in the impression point selection step (S54) as a point requiring an impression using a discrimination rule. Since the 3-1 Pearson correlation coefficient is selected as the smallest Pearson correlation coefficient, one of the first and third points is selected as the point that needs to be raised. The discrimination rule is used when selecting one of the first and third points.

The discrimination rule compares the moving distances of two points with the smallest Pearson correlation coefficient, and selects the small point as the point that needs to be increased first, and if the moving distances of the two points are the same, the priority point is raised in a predetermined order. This is to select the necessary point.

For example, when comparing the moving distance of the first point and the third point in Table 1, the moving distance of the first point is 2.4 and the moving distance of the third point is 2.3, so the moving distance of the third point is small. Select 3 points as the point that needs to be raised first.

If the moving distance of the first point and the moving distance of the third point are the same, a priority point is selected as a point requiring an increase in a predetermined order. The predetermined order may be determined as a first point -> a second point -> a third point -> a fourth point in ascending order, or the user may input a specific order. For example, if the predetermined order is in ascending order, the first point takes precedence, so the first point is selected as a point requiring an increase.

Next, when the point where the impression is required is selected, the controller 50 controls the hydraulic supply device 40 to raise the point where the impression is required in the selection point raising step (S55). In the selected point raising step (S55), all the hydraulic actuators 10 are operated and not all points are simultaneously raised, but only the hydraulic actuator 10 located at the point where the impression is required to raise the hydraulic pressure is supplied to raise only the point requiring the impression.

The height to be raised in the simultaneous raising step (S56) and the selected point raising step (S55) may be determined in advance. For example, if it is decided to raise in units of 5 cm, hydraulic pressure is supplied to move all points by 5 cm in the simultaneous raising step (S56), and hydraulic pressure may be supplied to move a specific point by 5 cm in the selected point raising step (S55). have. The time to be raised in the simultaneous raising step S56 and the selected point raising step S55 may be predetermined. For example, if it is determined to increase by supplying hydraulic pressure for 5 seconds, hydraulic pressure is supplied to all points for 5 seconds in the simultaneous increase step (S56), and hydraulic pressure is supplied to a specific point for 5 seconds in the selected point increase step (S55). I can.

When the simultaneous raising step (S56) or the selected point raising step (S55) is performed for a predetermined height or time, the moving distance measurement step 40 is performed to measure the moving distance after the hike is performed, and the target arrival determination step (S80) ) To compare with the target height.

5 is a graph showing the height of an impression point over time in a conventional structure (2) impression method, and FIG. 6 is a graph showing the height of an impression point over time in a structure simultaneous impression system using statistical analysis according to an embodiment of the present invention to be.

Referring to FIG. 5, it can be seen that in the conventional structure raising method, there is a difference in height between the first to fourth points at the same time, and there is a large deviation in the height of each point around a dotted line with a slope of 1. . In addition, it can be seen that there is a large difference when the first to fourth points reach the dashed-dotted line representing the target height.

Referring to FIG. 6, in the system for simultaneously raising a structure using statistical analysis according to an embodiment of the present invention, there is a difference in height between the first to fourth points at the same time, but the height of each point is centered on a dotted line with a slope of 1. It can be seen that the deviation is close to 1. In addition, it can be seen that the point in time when the first to fourth points reach the dashed-dotted line indicating the target height is almost simultaneously.

The conventional structure (2) impression method is a method of raising a lower point by simply comparing the moving distance of each point at a specific point in time, so that a difference in height of the impression occurred at the same point in time, but statistical analysis according to an embodiment of the present invention In the simultaneous structure elevation system using, the Pearson correlation coefficient at a specific point in time is calculated by reflecting all the measured values of the moving distances of previous points in time, so the height of each point can be increased while keeping the deviation of the moving distance of each point small. That is, according to an embodiment of the present invention, while maintaining a small difference in the moving distance of each point, it is possible to perform a simultaneous increase of substantially the same height of each point.

Referring back to FIG. 3, the hydraulic measurement step (S60) and the safety monitoring step (S70) may be performed independently and in parallel with the movement distance measurement step (S40) and the statistics-based raising step (S50). . In the hydraulic pressure measurement step (S60), the hydraulic pressure measurement sensor 30 measures the hydraulic pressure value supplied to the hydraulic actuator 10 and provides it to the controller 50. The controller 50 may organize the hydraulic pressure values received from the hydraulic pressure measurement sensor 30 according to measurement periods and points and store them in a storage unit. The controller 50 performs a safety monitoring step (S70) of monitoring whether a problem exists in the hydraulic supply device 40 and the hydraulic actuator 10 based on the hydraulic pressure value obtained in the hydraulic pressure measurement step (S60).

In the hydraulic pressure measurement step (S60), the hydraulic pressure at the point where the hydraulic pressure measurement sensor 30 is located in the hydraulic supply line is measured and transmitted to the controller 50. In the hydraulic pressure measurement step (S60), the controller 50 may request a measured value from the hydraulic pressure measurement sensor 30 and perform an operation of receiving the measured value. The hydraulic pressure measurement step (S60) may be repeatedly performed at regular intervals. When the hydraulic pressure measurement step (S60) is performed, the safety monitoring step (S70) is performed to check whether an abnormality exists in the hydraulic supply line.

If the safety monitoring step (S70) is performed, the hydraulic pressure measurement step (S60) may be performed again according to a predetermined period. The hydraulic pressure measurement step (S60) and the safety monitoring step (S70) may be set to end based on the user's input. Alternatively, when the target height is reached as a result of performing the target reach determination step (S80) to determine whether the target height has been reached by comparing the current moving distance with the target height, the hydraulic pressure measurement step (S60) and the safety monitoring step (S70) are terminated. Can be set to

7 is a flowchart illustrating a safety monitoring step (S70) using quartile analysis according to an embodiment of the present invention.

As shown in Figure 7, the safety monitoring step (S70) is obtained by subtracting the value obtained by multiplying the sensitivity by the interquartile range using the hydraulic pressure values received from the plurality of hydraulic pressure measuring sensors 30 from the first quartile. A limit range calculation step (S71) of calculating a limit range consisting of a lower limit value and an upper limit value obtained by adding the value obtained by multiplying the sensitivity by the interquartile range to the third quartile (S71), hydraulic values received from a plurality of hydraulic pressure measurement sensors 30 It may include a limit range comparison step (S72) for comparing whether the first quartile point is less than or greater than the third quartile point (S72), and an action step (S73) for performing safety measures when the hydraulic pressure value is outside the limit range. . Safety measures may include various actions such as adjusting the supply of hydraulic pressure so that the hydraulic actuator 10 maintains the current position, or providing a warning notifying the occurrence of an abnormality to the user.

The limit range calculation step (S71) may calculate a limit range using a quartile based on the hydraulic pressure value received from the hydraulic pressure measurement sensor 30. Table 3 below shows the measured hydraulic pressure values supplied to the hydraulic actuators 10 located at the first to fourth points.

Hydraulic system pressure Cycle Point 1 2nd point Third point Point 4 One 300 300 300 300 2 320 0 300 250 3 350 100 300 300 4 330 200 300 300 5 300 250 0 210 6 310 300 150 320 7 330 350 0 300 8 320 0 0 0 9 10 11

In Table 3, the cycle represents the number of times the hydraulic pressure measurement step (S60) was performed. Period 1 indicates that the hydraulic pressure measurement step (S60) was performed first, and period 2 indicates that the hydraulic pressure performing step was performed second. In Table 3, the hydraulic pressure measurement step (S60) is performed 8 times and the measured hydraulic pressure until cycle 8 is described, and the oil pressure value of cycles 9 to 11 is not described, the eighth hydraulic pressure measurement step (S60) is currently performed. This is because it represents the state of being. The controller 50 may perform the hydraulic pressure measurement step (S60) at predetermined periods and store the received hydraulic pressure values at each point in the storage unit in order as shown in Table 3. The controller 50 calculates a limit range using an inter-quantile range (IQR) by performing a limit range calculation step (S71) every predetermined period.

8 is a view for explaining a limit range using an interquartile range according to an embodiment of the present invention. This will be described with reference to FIGS. 7 and 8 together.

To find the interquartile range, the first quartile position and the third quartile position are found using Equation 2 below.

(i: quartile order, q _i : i-th quartile position, n: total number of data)

For example, at point 1 in Table 3, the first quartile position (q ₁ ) is 1(8+1)/4 = 2.25, and the third quartile position (q ₃ ) is 3(8+1)/4 = 6.75.

Once the first quartile position (q ₁ ) and the third quartile position (q ₃ ) are found, the first quartile position (N _qn1 ) and the first data located above the first quartile position (q ₁ ) are found. The first data located below the _1st quartile position (q ₁ ), the lower number of the first quartile position (N _qm1 ), and the third quartile position upper number, which is the first data located above the _third quartile position (q ₃ ) The first data located below (N _qn3 ) and the third quartile position (q ₃ ), which is the number below the third quartile position (N _qm3 ), is calculated.

If the data at the first point in Table 3 are arranged in order from the smallest number, they are 300, 300, 310, 320, 320, 330, 330, 350, and the first quartile position upper number (N _qn1 ) is the first quartile position. It is 310, which is the first data located above (or in the next order) 2.25, which is (q ₁ ), and the number below the first quartile position (N _qm1 ) is below 2.25, which is the first quartile position (q ₁ ) (or The first data located in the previous order) is 300, and the third quartile position _{upper number} (N _qn3 ) is 330, which is the first data located above (or next to) the third quartile position (q ₃ ) 6.75, The third quartile position lower number (N _qm3 ) is 330, which is the first data located below (or in previous order) the third quartile position (q ₃ ) of 6.75.

When the upper and lower numbers of the first and third quartile positions are found, the quartile is obtained using Equations 3 and 4 below.

(Q ₁ : 1st quartile, N _qn1 : 1st quartile position _{upper number} N _qm1 : 1st quartile position lower number)

(Q ₃ : 3rd quartile, N _qn3 : 3rd quartile position _{upper number} N _qm3 : 3rd quartile position lower number)

At the first point in Table 3, the first quartile (Q ₁ ) is 310(1/4)+300(3/4) = 302.5, and the third quartile (Q ₃ ) is 330(3/4)+330 (1/4) = 330.

When the first quartile and the third quartile are obtained, the interquartile range (IQR) is obtained using Equation 5 below.

The interquartile range (IQR) in Table 3 is 27.5, minus the _first quartile (Q ₁ ), 302.5, from 330, the _third quartile (Q ₃ ).

When the interquartile range (IQR) is calculated, the limit range is calculated using Equations 6 and 7 below.

(I ₁ : lower limit, Q ₁ : first quartile, x: sensitivity, IQR: interquartile range)

The lower limit (I ₁ ) is calculated by subtracting the value obtained by multiplying the interquartile range (IQR) by the sensitivity (x) from the first quartile (Q ₁ ). At the first point in Table 3, the lower limit (I ₁ ) is 302.5-0.1 (27.5) = 299.75 when the sensitivity (x) is set to 0.1.

(I ₃ : upper limit, Q ₃ : first quartile, x: sensitivity, IQR: interquartile range)

The upper limit (I ₃ ) is calculated by multiplying the interquartile range (IQR) by the sensitivity (x) to the third quartile (Q ₃ ). The upper limit value (I ₃ ) at the first point in Table 3 becomes 330 + 0.1 (27.5) = 332.75 when the sensitivity (x) is set to 0.1.

When the sensitivity (x) is set large, the limit range is widened, and when the sensitivity (x) is set small, the limit range is narrowed. The sensitivity (x) can be set to a value of 1.5 or less to prevent the limit range from being excessively widened.

Table 4 below is a calculation of the limit ranges of the first to fourth points using the hydraulic pressure values shown in Table 3.

responsiveness x 0.1 all Point 1 2nd point Third point Point 4 First quartile Q ₁ 162.5 302.5 25 0 220 Third quartile Q ₃ 307.5 330 300 300 300 Interquartile range IQR 145 27.5 275 300 80 Limit range Lower limit I ₁ 148 299.75 -2.5 -30 212 Upper limit I ₃ 322 322.75 327.5 330 308

As shown in Table 4, if the limit range is calculated based on the data measured by the hydraulic pressure value until cycle 8, the limit range is calculated by considering all the hydraulic pressure values from the hydraulic pressure value in cycle 1 to cycle 8 as described above. do. Therefore, in Table 3, the limit range calculated by data up to period 4 and the limit range calculated by data up to period 8 are different. In the present specification, the limit range of the hydraulic pressure value at the first point to the fourth point is exemplarily calculated, but the limit range can be calculated in the same manner at various points of the hydraulic supply line that can be measured by the hydraulic pressure measurement sensor 30. have. When the limit range is calculated, the controller 50 compares the hydraulic pressure value received from the hydraulic pressure measurement sensor in the limit range comparison step S72 with the limit range. If the hydraulic pressure value is greater than or equal to the lower limit value and equal to or less than the upper limit value (Y), it is judged that no outlier has occurred. The controller 50 determines that an outlier has occurred when the currently measured hydraulic pressure value is smaller than the lower limit value or greater than the upper limit value (N) of the limit range. At this time, the outlier means that the hydraulic pressure value is much lower or higher than the appropriate level. For example, if you compare 320, which is the hydraulic pressure value of the most recently measured period 8 at the first point in Table 3, with the limit range (lower limit: 299.75, upper limit: 332.75) at the first point in Table 4, the limit range is Since it does not deviate, it can be determined that the hydraulic pressure value at the first point in period 8 is not an outlier. If the hydraulic pressure value of the period 8 at the first point in Table 3 is measured as 360, it can be determined that an abnormal value has occurred as the hydraulic value greater than the upper limit value has been measured.

Calculating the limit range using quartiles according to an embodiment of the present invention is to determine whether an outlier exists by considering all the hydraulic values measured at each point from the start of the structure 2 to the present. Compared to determining outliers based on the range of hydraulic pressure, it can perform more efficient monitoring.

If the measured hydraulic pressure value is out of the limit range, it may be the result of a problem such as failure or breakage in the hydraulic supply line, so the controller 50 performs the action step (S73) of performing safety measures to prevent an accident from occurring. can do. Safety measures can be set by the user. Safety measures may include measures to operate to reduce the hydraulic pressure when the hydraulic pressure value is greater than the upper limit of the limit range or to increase the hydraulic pressure when the hydraulic pressure value is less than the lower limit of the limit range. The safety measures may include an operation of visually and aurally notifying the user that an abnormal value has occurred in the hydraulic pressure value at a specific point using a display or speaker. The controller can perform other necessary safety measures. If the safety measures are performed, the simultaneous raise step (S56) and the statistical raise step (S50) are stopped, and the hydraulic pressure is continuously measured according to a predetermined period, and the moving distance can be continuously measured and stored.

As described above, according to an embodiment of the present invention, a simultaneous impression is achieved by measuring the degree to which the structure 2 is raised using the distance measurement sensor 20 and statistically analyzing the degree of the increase using the Pearson correlation coefficient. Since it is possible to select the optimum impression point to achieve, it is possible to achieve a precise simultaneous impression by minimizing the error of each impression point of the structure (2).

In addition, according to an embodiment of the present invention, when the hydraulic pressure supplied to the hydraulic actuator 10 is measured, and an outlier occurs where the hydraulic pressure value is out of the limit range using the interquartile range, the simultaneous structure elevation system is stopped or Since it is possible to notify the user that an abnormality has occurred, accidents that may occur during the hike can be prevented in advance.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, and the present invention is not limited thereto, and within the technical scope of the present invention, those of ordinary skill in the art It would be clear that the transformation or improvement is possible.

All simple modifications to changes of the present invention belong to the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

1: ground
2: structure
10: hydraulic actuator
20: distance measuring sensor
30: oil pressure measurement sensor
40: hydraulic supply device
41: control valve
42: hydraulic pump
43: hydraulic tank
50: controller

Claims (10)

A plurality of hydraulic actuators operating to raise the structure by receiving hydraulic pressure;
A hydraulic pressure supply device for supplying hydraulic pressure to the plurality of hydraulic actuators;
A plurality of distance measuring sensors disposed for each of the hydraulic actuators to measure a moving distance of the structure; And
Based on the moving distances received from the plurality of distance measuring sensors, a controller for controlling the hydraulic supply device to select a point in need of an impression using a Pearson correlation coefficient, and to operate the hydraulic actuator located at a point in which the impression is required Including,
The controller is
Two of the plurality of Pearson correlation coefficients are calculated by comparing the moving distances of the structure at the points where the plurality of hydraulic actuators received from the plurality of distance measuring sensors are located, and the smallest value among the plurality of Pearson correlation coefficients. A structure simultaneous lifting system using statistical analysis, which selects a point with a small moving distance among the four points as a point requiring an impression, and controls the hydraulic supply device to raise a point where an impression is required. delete The method according to claim 1,
Further comprising a plurality of hydraulic pressure measurement sensors for measuring hydraulic pressure values supplied to the plurality of hydraulic actuators,
The controller is
Based on the hydraulic pressure values received from the plurality of hydraulic pressure measurement sensors, the hydraulic values measured from the start of raising the structure to the present are arranged in small order, the first quartile and the third quartile are obtained, and the first 3 A lower limit calculated by subtracting the first quartile from the quartile to obtain the interquartile range, and subtracting the value obtained by multiplying the interquartile range by the sensitivity from the first quartile, and the sensitivity to the interquartile range A limit range consisting of an upper limit value calculated by adding a value multiplied to the third quartile is obtained, and when the hydraulic pressure value is less than the lower limit value or the hydraulic pressure value is greater than the upper limit value, it is determined that it is out of the limit range, Simultaneous structure elevation system using statistical analysis that further performs safety measures when there is an oil pressure value outside the limit range based on the quartile. delete The method according to claim 1,
The hydraulic supply device
A control valve connected to each of the plurality of hydraulic actuators to control hydraulic pressure supplied to the hydraulic actuators;
A hydraulic pump providing hydraulic pressure to the plurality of hydraulic actuators through the control valve; And
Structure simultaneous lifting system using statistical analysis, including an oil tank that stores oil that transmits hydraulic pressure. A moving distance measuring step in which a plurality of distance measuring sensors arranged for each of the plurality of hydraulic actuators measure the moving distance of the structure in real time when a plurality of hydraulic actuators receive hydraulic pressure from a hydraulic supply device to raise the structure; And
Based on the moving distances received from the plurality of distance measuring sensors, the controller selects a point where an impression is required using a Pearson correlation coefficient, and controls the hydraulic supply device to operate the hydraulic actuator located at the point where the impression is required. Including a statistical-based hike step,
The statistical-based raising step
A correlation coefficient calculation step of calculating a plurality of Pearson correlation coefficients by comparing moving distances measured by the plurality of distance measuring sensors with each other;
A minimum value selecting step of selecting the smallest Pearson correlation coefficient among the plurality of Pearson correlation coefficients;
An impression point selection step of selecting one of the two points from which the smallest Pearson correlation coefficient is derived as a point requiring an impression using a determination rule; And
A method of simultaneously raising a structure using statistical analysis, comprising a step of raising a selected point for controlling the hydraulic supply device to raise the point where the impression is required. delete The method of claim 6,
The above discrimination rules are
By comparing the moving distances of the two points having the smallest Pearson correlation coefficient, a small point is selected as a point that needs to be increased first, and if the moving distances of the two points are the same, the priority point is increased according to a predetermined order A method of simultaneously raising a structure using statistical analysis, which is to select a necessary point. The method of claim 6,
A hydraulic pressure measurement step of measuring a hydraulic pressure value supplied to the hydraulic actuator in real time by a plurality of hydraulic pressure measuring sensors connected to each of the plurality of hydraulic actuators; And
The controller further comprises a safety monitoring step of performing safety measures when there is a hydraulic pressure value out of the limit range based on the quartile based on the hydraulic pressure values received from the plurality of hydraulic pressure measurement sensors,
The safety monitoring step
Using the hydraulic values received from the plurality of hydraulic pressure measurement sensors, the hydraulic values measured from the start of the structure to the present are arranged in small order, the first quartile and the third quartile are obtained, and the first The interquartile range is obtained by subtracting the first quartile from the 3 quartile, the lower limit obtained by subtracting the value obtained by subtracting the first quartile range by the sensitivity multiplied by the interquartile range, and the sensitivity to the interquartile range. A limit range calculation step of calculating a limit range consisting of an upper limit value obtained by adding the multiplied value to the third quartile;
A limit range comparison step of comparing whether hydraulic pressure values received from the plurality of hydraulic pressure measurement sensors are smaller than the lower limit value or greater than the upper limit value; And
A method of simultaneously raising a structure using statistical analysis, comprising a step of performing the safety measure when the hydraulic pressure value is out of the limit range. delete

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